package com.code.leetcode.idea;

import com.code.leetcode.idea.common.ListNode;

public class LeetCodeIdea021 {
    public static void main(String[] args) {
//        String s = "()[]{}";
        LeetCodeIdea021 leetCodeIdea021 = new LeetCodeIdea021();
        ListNode list1 = new ListNode();
        ListNode list2 = new ListNode();
        ListNode list = leetCodeIdea021.mergeTwoLists(list1, list2);
        System.out.println(list);

    }
    public ListNode mergeTwoLists(ListNode list1, ListNode list2) {
        if (list1 == null) {
            return list2;
        } else if (list2 == null) {
            return list1;
        } else if (list1.val < list2.val) {
            list1.next = mergeTwoLists(list1.next, list2);
            return list1;
        } else {
            list2.next =mergeTwoLists(list1, list2.next);
            return list2;
        }
    }
}